angular-material-npfixed
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The Angular Material project is an implementation of Material Design in Angular.js. This project provides a set of reusable, well-tested, and accessible Material Design UI components. Angular Material is supported internally at Google by the Angular.js, M
309 lines (248 loc) • 9.32 kB
JavaScript
(function() {
'use strict';
angular.module('material.components.fabShared', ['material.core'])
.controller('MdFabController', MdFabController);
function MdFabController($scope, $element, $animate, $mdUtil, $mdConstant, $timeout) {
var vm = this;
var initialAnimationAttempts = 0;
// NOTE: We use async eval(s) below to avoid conflicts with any existing digest loops
vm.open = function() {
$scope.$evalAsync("vm.isOpen = true");
};
vm.close = function() {
// Async eval to avoid conflicts with existing digest loops
$scope.$evalAsync("vm.isOpen = false");
// Focus the trigger when the element closes so users can still tab to the next item
$element.find('md-fab-trigger')[0].focus();
};
// Toggle the open/close state when the trigger is clicked
vm.toggle = function() {
$scope.$evalAsync("vm.isOpen = !vm.isOpen");
};
/*
* Angular Lifecycle hook for newer Angular versions.
* Bindings are not guaranteed to have been assigned in the controller, but they are in the $onInit hook.
*/
vm.$onInit = function() {
setupDefaults();
setupListeners();
setupWatchers();
fireInitialAnimations();
};
// For Angular 1.4 and older, where there are no lifecycle hooks but bindings are pre-assigned,
// manually call the $onInit hook.
if (angular.version.major === 1 && angular.version.minor <= 4) {
this.$onInit();
}
function setupDefaults() {
// Set the default direction to 'down' if none is specified
vm.direction = vm.direction || 'down';
// Set the default to be closed
vm.isOpen = vm.isOpen || false;
// Start the keyboard interaction at the first action
resetActionIndex();
// Add an animations waiting class so we know not to run
$element.addClass('md-animations-waiting');
}
function setupListeners() {
var eventTypes = [
'click', 'focusin', 'focusout'
];
// Add our listeners
angular.forEach(eventTypes, function(eventType) {
$element.on(eventType, parseEvents);
});
// Remove our listeners when destroyed
$scope.$on('$destroy', function() {
angular.forEach(eventTypes, function(eventType) {
$element.off(eventType, parseEvents);
});
// remove any attached keyboard handlers in case element is removed while
// speed dial is open
disableKeyboard();
});
}
var closeTimeout;
function parseEvents(event) {
// If the event is a click, just handle it
if (event.type == 'click') {
handleItemClick(event);
}
// If we focusout, set a timeout to close the element
if (event.type == 'focusout' && !closeTimeout) {
closeTimeout = $timeout(function() {
vm.close();
}, 100, false);
}
// If we see a focusin and there is a timeout about to run, cancel it so we stay open
if (event.type == 'focusin' && closeTimeout) {
$timeout.cancel(closeTimeout);
closeTimeout = null;
}
}
function resetActionIndex() {
vm.currentActionIndex = -1;
}
function setupWatchers() {
// Watch for changes to the direction and update classes/attributes
$scope.$watch('vm.direction', function(newDir, oldDir) {
// Add the appropriate classes so we can target the direction in the CSS
$animate.removeClass($element, 'md-' + oldDir);
$animate.addClass($element, 'md-' + newDir);
// Reset the action index since it may have changed
resetActionIndex();
});
var trigger, actions;
// Watch for changes to md-open
$scope.$watch('vm.isOpen', function(isOpen) {
// Reset the action index since it may have changed
resetActionIndex();
// We can't get the trigger/actions outside of the watch because the component hasn't been
// linked yet, so we wait until the first watch fires to cache them.
if (!trigger || !actions) {
trigger = getTriggerElement();
actions = getActionsElement();
}
if (isOpen) {
enableKeyboard();
} else {
disableKeyboard();
}
var toAdd = isOpen ? 'md-is-open' : '';
var toRemove = isOpen ? '' : 'md-is-open';
// Set the proper ARIA attributes
trigger.attr('aria-haspopup', true);
trigger.attr('aria-expanded', isOpen);
actions.attr('aria-hidden', !isOpen);
// Animate the CSS classes
$animate.setClass($element, toAdd, toRemove);
});
}
function fireInitialAnimations() {
// If the element is actually visible on the screen
if ($element[0].scrollHeight > 0) {
// Fire our animation
$animate.addClass($element, '_md-animations-ready').then(function() {
// Remove the waiting class
$element.removeClass('md-animations-waiting');
});
}
// Otherwise, try for up to 1 second before giving up
else if (initialAnimationAttempts < 10) {
$timeout(fireInitialAnimations, 100);
// Increment our counter
initialAnimationAttempts = initialAnimationAttempts + 1;
}
}
function enableKeyboard() {
$element.on('keydown', keyPressed);
// On the next tick, setup a check for outside clicks; we do this on the next tick to avoid
// clicks/touches that result in the isOpen attribute changing (e.g. a bound radio button)
$mdUtil.nextTick(function() {
angular.element(document).on('click touchend', checkForOutsideClick);
});
// TODO: On desktop, we should be able to reset the indexes so you cannot tab through, but
// this breaks accessibility, especially on mobile, since you have no arrow keys to press
//resetActionTabIndexes();
}
function disableKeyboard() {
$element.off('keydown', keyPressed);
angular.element(document).off('click touchend', checkForOutsideClick);
}
function checkForOutsideClick(event) {
if (event.target) {
var closestTrigger = $mdUtil.getClosest(event.target, 'md-fab-trigger');
var closestActions = $mdUtil.getClosest(event.target, 'md-fab-actions');
if (!closestTrigger && !closestActions) {
vm.close();
}
}
}
function keyPressed(event) {
switch (event.which) {
case $mdConstant.KEY_CODE.ESCAPE: vm.close(); event.preventDefault(); return false;
case $mdConstant.KEY_CODE.LEFT_ARROW: doKeyLeft(event); return false;
case $mdConstant.KEY_CODE.UP_ARROW: doKeyUp(event); return false;
case $mdConstant.KEY_CODE.RIGHT_ARROW: doKeyRight(event); return false;
case $mdConstant.KEY_CODE.DOWN_ARROW: doKeyDown(event); return false;
}
}
function doActionPrev(event) {
focusAction(event, -1);
}
function doActionNext(event) {
focusAction(event, 1);
}
function focusAction(event, direction) {
var actions = resetActionTabIndexes();
// Increment/decrement the counter with restrictions
vm.currentActionIndex = vm.currentActionIndex + direction;
vm.currentActionIndex = Math.min(actions.length - 1, vm.currentActionIndex);
vm.currentActionIndex = Math.max(0, vm.currentActionIndex);
// Focus the element
var focusElement = angular.element(actions[vm.currentActionIndex]).children()[0];
angular.element(focusElement).attr('tabindex', 0);
focusElement.focus();
// Make sure the event doesn't bubble and cause something else
event.preventDefault();
event.stopImmediatePropagation();
}
function resetActionTabIndexes() {
// Grab all of the actions
var actions = getActionsElement()[0].querySelectorAll('.md-fab-action-item');
// Disable all other actions for tabbing
angular.forEach(actions, function(action) {
angular.element(angular.element(action).children()[0]).attr('tabindex', -1);
});
return actions;
}
function doKeyLeft(event) {
if (vm.direction === 'left') {
doActionNext(event);
} else {
doActionPrev(event);
}
}
function doKeyUp(event) {
if (vm.direction === 'down') {
doActionPrev(event);
} else {
doActionNext(event);
}
}
function doKeyRight(event) {
if (vm.direction === 'left') {
doActionPrev(event);
} else {
doActionNext(event);
}
}
function doKeyDown(event) {
if (vm.direction === 'up') {
doActionPrev(event);
} else {
doActionNext(event);
}
}
function isTrigger(element) {
return $mdUtil.getClosest(element, 'md-fab-trigger');
}
function isAction(element) {
return $mdUtil.getClosest(element, 'md-fab-actions');
}
function handleItemClick(event) {
if (isTrigger(event.target)) {
vm.toggle();
}
if (isAction(event.target)) {
vm.close();
}
}
function getTriggerElement() {
return $element.find('md-fab-trigger');
}
function getActionsElement() {
return $element.find('md-fab-actions');
}
}
})();